Battery pack and electrical apparatus

Abstract

The present application relates to a battery pack and an electrical apparatus, including a box body and a battery cell. The box body encloses to form an accommodating cavity, the box body includes a carrier located at its top and used for defining the accommodating cavity, and the battery cell is accommodated in the accommodating cavity. A carrying surface of the carrier facing the accommodating cavity is constructed as a plane, and the battery cell is arranged on the carrying surface.

What is claimed is: 
     
         1 . A battery pack, comprising:
 a box body enclosing to form an accommodating cavity, the box body comprising a carrier located at its top and used for defining the accommodating cavity; and   a battery cell accommodated in the accommodating cavity;   wherein the carrier has a carrying surface facing the accommodating cavity, and the carrying surface is constructed as a plane.   
     
     
         2 . The battery pack according to  claim 1 , wherein in a vertical direction, an area N 1  of an orthographic projection of the carrying surface and an area N 2  of an orthographic projection of the carrier meet: N 1 /N 2 ≥0.2. 
     
     
         3 . The battery pack according to  claim 1 , wherein the orthographic projection of the carrying surface is rectangular in the vertical direction. 
     
     
         4 . The battery pack according to  claim 1 , wherein the carrier has a carrying portion and a connecting portion, the connecting portion encloses and is connected to an edge of the carrying portion, the carrying portion is used for defining the accommodating cavity, and the connecting portion is connected to a part of the box body other than the carrier;
 wherein an inner surface of the carrying portion facing the accommodating cavity is constructed to form the carrying surface.   
     
     
         5 . The battery pack according to  claim 4 , wherein the carrying portion is arranged to protrude in a direction away from the accommodating cavity with respect to the connecting portion. 
     
     
         6 . The battery pack according to  claim 4 , wherein an outer surface of the carrying portion away from the accommodating cavity is parallel to the carrying surface. 
     
     
         7 . The battery pack according to  claim 1 , wherein the battery cell is suspended from the carrying surface. 
     
     
         8 . The battery pack according to  claim 7 , wherein an outer surface of the battery cell facing the carrier is a first outer surface, the battery cell comprises electrode terminals, and the electrode terminals are arranged on an outer surface of the battery cell other than the first outer surface. 
     
     
         9 . The battery pack according to  claim 8 , wherein the battery cell has a second outer surface arranged opposite to the first outer surface, and the electrode terminals are arranged on the second outer surface. 
     
     
         10 . The battery pack according to  claim 7 , wherein the battery cell is bonded to the carrier. 
     
     
         11 . The battery pack according to  claim 1 , wherein the box body further comprises a bottom cover located at its bottom, the bottom cover is used for defining the accommodating cavity, and the bottom cover is arranged at an interval from the battery cell. 
     
     
         12 . The battery pack according to  claim 1 , wherein the box body further comprises a bottom cover and a frame, the frame encloses to form a cavity of which both ends in the vertical direction are run through, the bottom cover and the carrier respectively cover the opposite ends of the cavity in the vertical direction, and the bottom cover, the frame, and the carrier jointly enclose to form the accommodating cavity. 
     
     
         13 . The battery pack according to  claim 12 , wherein the carrier is fixedly connected to or integrally formed with the frame. 
     
     
         14 . An electrical apparatus, comprising the battery pack according to  claim 1 , wherein the battery pack is used for providing electric energy to the electrical apparatus. 
     
     
         15 . The electrical apparatus according to  claim 14 , wherein the electrical apparatus comprises a vehicle, and the battery pack is arranged at the bottom of the vehicle body. 
     
     
         16 . The electrical apparatus according to  claim 15 , wherein in the vertical direction, a distance L between the carrier and the vehicle body meets: L≥0. 
     
     
         17 . The electrical apparatus according to  claim 15 , wherein the battery pack is connected to the vehicle body through the carrier. 
     
     
         18 . The electrical apparatus according to  claim 17 , wherein the carrier is configured to form at least a part of the chassis of the vehicle body.